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Cozy Heat 18kW Wood-Burning Sauna Stove | COZY18

Cozy Heat 18kW Wood-Burning Sauna Stove

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2-Year Warranty
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SKU COZY18

COZY elevates the traditional craft of wood-burning sauna stoves with a distinctive design handcrafted in Estonia, where sauna bathing is a way of life.

The Cozy Heat 18kW Wood-Burning Sauna Stove delivers mild, long-lasting heat and is designed for ladling water over hot stones to create rich, satisfying steam. Built for durability, the most heat-exposed component—the flame cutter—is made from sturdy 5 mm-thick stainless steel to withstand intense use over time.

Enjoy the authentic character and timeless comfort that only a traditional wood-fired sauna heater can provide.

Important: Sauna stones are required for operation and are sold separately. This stove requires 8 boxes of sauna stones.

Cozy Heat 18 is ideal for medium sauna rooms (317–635 cu. ft.).

Features

  • Wood-burning
  • Steel construction
  • Smoke gases are 6x cleaner
  • German BIMSCH certificate
  • Uses 25%–40% less fuel than comparable sauna stoves
  • Minimal safety clearance requirements
  • Mild and long-lasting heat
  • Floor mount
  • Designed and engineered in Estonia
  • 2-year warranty

Specifications

Sauna Room Size
317–635 cu. ft.
Power Rating
18 kW
Minimum Room Height
82.51" (2096 mm)
Stone Capacity
352 lb (160 kg)
Stone Size
4"–6" (10–15 cm)
Dimensions
19.68"W × 24.58"D × 29.76"H (500 × 625 × 756 mm)
Weight
159 lb (72 kg)
Shipping Weight (With Stones)
511 lb (232 kg)
Maximum Firewood Length
15.7" (40 cm)
Diameter of Firewood
3.15"–4.72" (80–120 mm)
Flue Connection Location
Top
Safety Clearance (Side)
9.05" (230 mm)
Safety Clearance (Back)
9.05" (230 mm)
Safety Clearance (Front)
19.68" (500 mm)
Safety Clearance (Top)
51.77" (1340 mm)

What's Included

  • Outer frame of the heater
  • Chimney pipe
  • Heater body
  • Cleaning hatch
  • Heater door with glass
  • Ash box
  • Installation and operation manual
  • 2-year warranty

Complete Your Setup

To install and operate this sauna heater properly, the following components are needed:

  • Cozy Heat Traditional Split-Face Sauna Stones: 8 boxes
  • Cozy Heat Premium Rounded Sauna Stones: 8 boxes

User Manuals

Installation and Operation Manual

Warranty

Outstanding Customer Satisfaction

Trusted by customers for comfort, quality, and lasting peace of mind.

Full Warranty Included

Authorized dealer pricing with manufacturer-backed coverage.

Flexible Financing

Monthly payments from 0% APR with Shop Pay.

Expert Support

Reach our team by live chat, phone, or email — M–F, 9am–5pm EST.

Customers Are Saying

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Powerful, Efficient Wood-Fired Sauna Heat

Cozy Heat SW 12kW Thru-Wall Wood-Burning Sauna Stove | COZYSWTW12

Clean Burn Technology

Engineered to exceed strict German BIMSCH clean-burn standards, these stoves deliver powerful, consistent heat while using 25–40% less wood per session. That means faster heat-up times, lower fuel costs, and cleaner air.

Cozy Heat SW 12kW Thru-Wall Wood-Burning Sauna Stove | COZYSWTW12

Built to Last for Decades

Precision-welded, thick steel construction retains heat longer and withstands years of high-temperature sauna sessions without warping or fatigue.

Cozy Heat SW 12kW Thru-Wall Wood-Burning Sauna Stove | COZYSWTW12

Proven Sauna Performance

Experience rich, even heat that fills the room quickly and holds steady. Less waiting. More sweating. A better sauna ritual every time.